Check token text while checking position
Check token text while checking position

While checking the scanner's position arguments, we might as well
check the text content it scanned.  This way we can fully specify the
lexer's expected state during these tests.

bransorem/golog,vzaramel/golog,samuell/golog,vzaramel/golog,mndrix/golog,mndrix/golog,bransorem/golog,samuell/golog